altai signal generators

The 160M No-Excuses Homebrew Vertical - 160m antenna designed for stations having a difficult time putting a decent signal on 160M from small or restricted lots.A 25 ft. vertical antenna, made from three 10 ft. PVC.

Pringles WiFi Antenna - DIY Wifi Antenna with a pringles can and extend your wifi signal, also known as cantenna.

Dummy Load Special Antenna - The wire antenna described in this page provides much stronger signal strength while staying within the concept of a dummy load antenna.

Agilent - Spectrum analyzers - Agilent maker of Oscilloscopes, Analyzers, Meters - Spectrum Analyzer (Signal Analyzer)

Amplitude Modulation - Amplitude Modulation (AM) is essentially a mixing process where the audio modulating signal is mixed with the radio frequency carrier

Decoding multiple Morse code signals - Decoding multiple Morse code signals automatically on a noisy RF band

Tropospheric propagation - Article about tropospheric propagation and the way in which radio signals at VHF and above propagate over greater distances than strictly line of sight in the troposphere

Elecraft K2 Improving CW Filter - Here is a cheap and simple way to significantly improve the K2 CW filter(s). With this mod, even strong signals will fade to black as they tune out of the filter pass band

Handling of extremely strong signals K2 Mod - Makes reception at frequency of strong tx close by possible

R-20 Signal Capture and Analysis Software - Connect your R-20 Communications Receiver to your computer. Put your listening hobby on your computer desktop.

APT Decoder - APTDecoder is a free software for recording and decoding signals transmitted by NOAA POES APT enabled weather satellites. It is run on a NT-based version of Window

RF Sampler - This circuit will let you look at the signal and frequency output of your transceiver.

LF Converter - Home made LF converter, listen to signals below 300 KHz

QLF Filter - Microprocessor based interface designed receives a signal from a Morse key, processes it, and re-transmits it to the radio. A microprocessor in the circuit is pre-programmed with a proprietary algorithm which makes a number of measurements and adjustments to the less percise human generated code.

Amateur Radio - Microphone Preamp - Low signal, noise-high AC gain preamplifier

13cm Signal Generator - A 13 CM signal source project by W6PQL

Microwave Marker - Signal marker for the microwave bands

23cm Signal Generator - A 23 signal source project by W6PQL

Circuit Improvements for the TS-440S - Some improvements for the Kenwood TS-440S, including distortion level in SSB in transmitted signals, Lack of crispness in the RX audio and Limited transmit frequency coverage.

Weak Signal - Linrad and SDR-IQ - Linrad and SDR-IQ Software Defined Receiver on Shortwave

Signalink USB Interface - Setup notes - Hints and Tips in using the Tigertronics SignalinkUSB External USB Sound Card and Interface

Signalink USB and Yaesu FT-857D - This webpage describe how to set up the Signalink USB interface and Yaesu FT-857D for digital operations by NA4IT

Band Monitor Scope by JF10ZL - A 7 Mhz band monitor scope project that exchanges all existing signals of that timing of 7MHz-band to viewer image like a hill on the oscilloscope by JF10ZL

TV To Scope Converter - This project takes after the VGA-to-Scope converter by using composite video rather than VGA signals to create a display on an oscilloscope.

DDS RF Signal Generator Project - S53MV Project - RF Signal Generator